Hello,
Sorry to say, there is no option to add bicolor in the color swatch.
But alternatively, try creating product attributes with individual color terms. For standard colors like white, black, or red, you can simply assign a color swatch or upload an image swatch.
For a term (like white/black), you can do the following:
1. Go to Products > Attributes, and select your color attribute.
2. Add a new term, White / Black.
3. In the term settings, instead of selecting a single color, upload a custom swatch image that represents the swatch (e.g., a circle split half white / half black).
Once this is done, the image swatch will appear in the product page like the other color options.
Best Regards,